Passed in 1673, the Test Act was a significant piece of legislation that formalised religious discrimination within the political landscape of Restoration Britain. By requiring all individuals holding civil or military office under the Crown to take the oaths of allegiance and supremacy, and to receive the sacrament according to the rites of the Church of England, the Act effectively barred both Catholics and Nonconformist Protestants from public service. This measure was designed to ensure that those in positions of authority remained loyal to the established state church, thereby reinforcing the Anglican character of the government.

The introduction of the Act was driven by deep-seated anxieties regarding the influence of Catholicism at the heart of the royal court. During this period, there was widespread suspicion that King Charles II and his brother, the Duke of York, harboured pro-Catholic sympathies, which stoked fears among the political class that the nation might be steered back towards Roman Catholicism. By mandating a public declaration against the doctrine of transubstantiation, the legislation served as a legal safeguard intended to expose and exclude those whose religious allegiances were perceived as a threat to the security of the Protestant state.

The implementation of the Test Act had profound consequences for the social and political fabric of the era, embedding religious exclusion into the machinery of the state for over a century. It created a rigid framework where political loyalty was inextricably linked to religious conformity, forcing many individuals to choose between their personal faith and their professional ambitions. The Act remained a cornerstone of Stuart political policy, reflecting the broader tensions of a society grappling with the legacy of the Civil War and the ongoing struggle to define the religious identity of the nation.

• Mandated that officeholders take the Anglican sacrament.
• Required a formal declaration against the doctrine of transubstantiation.
• Excluded Catholics and Nonconformists from civil and military positions.
• Reflected intense parliamentary fears of Catholic influence.
• Solidified the role of the Church of England in Restoration politics.